Author name: admin

Question: For a reciprocating pump, the indicator diagram is the graph between the
[A].

discharge and overall efficiency.

[B].

volume swept by piston for one complete revolution and the pressure in the cylinder.

[C].

angle swept by the crank pin at any instant and the discharge.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: In isotropic turbulence, the __________ are equal to each other.
[A].

temporal velocity components

[B].

mean square of velocity fluctuations in the three co-ordinate directions

[C].

root mean square of velocity fluctuations in the three co-ordinate directions

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: In a free vortex, the
[A].

velocity changes linearly with radial distance.

[B].

flow is necessarily rotational.

[C].

radial component of velocity is same everywhere.

[D].

stream lines are not circular.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Normal depth in open channel flow is the depth of flow in the channel
[A].

corresponding to uniform flow.

[B].

measured normal to the channel bed.

[C].

corresponding to steady flow.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Drag is the force component exerted on an immersed object,
[A].

passing the centroid of the body at 60°to the direction of motion.

[B].

the component being parallel to theflow direction.

[C].

the component being normal to the flow direction.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: A venturimeter can not be used for the direct measurement of
[A].

datum difference in the stretch of pipeflow

[B].

pressure difference in the flow throughpipeline.

[C].

friction loss in pipe flow.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of end to end connection of two or more pipes in series, the __________ each pipe.
[A].

same rate of flow passes through

[B].

head loss is same through

[C].

rate of flow in each pipe is proportional to the length of

[D].

total flow rate is the sum of flow rate in

Answer: Option A

Explanation:

No answer description available for this question.

Question: The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold’s number.
[A].

increases

[B].

decreases

[C].

remains same

[D].

may increase or decrease

Answer: Option B

Explanation:

No answer description available for this question.

Question: For a given Reynolds number, in a hydraulically smooth pipe, further smoothening __________ the friction factor.
[A].

brings about no further reduction of

[B].

increases

[C].

decreases

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.